The blade on the Guppie is secure in the body of the tool, it can be opened with one hand. There is no lock. Always be careful if you carry a knife in the pocket or on a belt loop like on
the picture above. It is better to attach the carabiner on your side for safety reasons. The Guppie also got a pocket clip if you prefer such carry.
It is important that strange looking knives or tools get a chance. They can be very handy for sure.